Gelbspan, Ross. The Heat is On. Ross Gelbpan, 1997. (1)

Hansen, James (2000). "Climatic Change: Understanding Global Warming". One World: The Health & Survival of the Human Species in the 21st century. Health Press. Retrieved on 2007-08-18.

http://www.effectofglobalwarming.com/images/What-is-global-warming-img.jpg

Ponnuru, Ramesh. "Rebooting the Right." Vol. 172. Issue 22 12/1/08 1-2. 18 Dec 2008 <http://web.ebscohost.com/ehost/detail?vid=5&hid=115&sid=57322c22-bbe5-431e-8aa7-df304a60b863%40SRCSM2&bdata=JnNpdGU9ZWhvc3QtbGl2ZQ%3d%3d#db=ulh&AN=35392073>.

Tesar, Jenny . GLOBAL WARMING. New York City, Oxford: Blackbirch Graphics, Inc, 1991. (64-65)

Wikipedia. "Global Warming." Wikipedia. Wikipedia. 19 Dec 2008 <http://en.wikipedia.org/wiki/Global_Warming>.